You may be right. I'm not trying to be argumentative, but how do you make those estimates? What do you know anout the focal length and distance from the lens?Sorry, I can't do it as it seems :-( The trick requires plenty (hundreds) of frames about the same view, and - due the spherical distortion of the cam - from the same position. There isn't enough of this kind of frame series in the released videos. Even small movements are problematic, because the noise prevents any automated alignment algorithm to be effective.
There will be only a dozen 'enhanced' picture soon, but most of them from different viewpoints. They will not fit for a mosaic.
About the scale: what's illuminated there is close to the cam. This can give a hint. I think the yellowish tubes are ~ 1 inch, the brown packed ones maybe 2 inch in diameter.